Which of the material is used to make compact disc (CD)
(a)PVC(b) PTFE(c) PC
In L/D ratio of the screw the length is —(a) Flighted length(b) Total length(c) Length of feed mne(d) Length of compression zone
1 ) .Which of the following is not a making media used in fitting work —(a) Whitewash(b) Prusiaan blue(c) Varnish(d) Copper sulphate
12.Surface plates are used for marking because —
(a)They can withstand the weight of heavy components
(b)They have large surface area
(c)Marking tools can slide over easily
(d)They provide the datum surface
E.Which of the following tap is used ti)r finish the treads —
(a)Taper taps(b) Intermediate tap (c) Secondary tap(d) Bottoming tap
For cutting the threads of M12 with 1.75 pitch what should be the diameter of the blanks in
mm.(a) 10.75(b) 11.25(c) 13.75(d) 11.825

Contd...2/-17
13/A/C/S-1/2/E-2-

15.Which of the following gauge cannot measure the angles directly(a) Universal bevel gauge(b) Bevel protractor(c) Bevel gauge(d) All of these 16.Which of the following machine is used for drilling large diameter holes (a) Portable drilling (b) Sensitive drilling (c) Bench drilling(d) Radial drillingFlutes are provided on the drill bits for(a) To form cutting
(b)To curl the chips and allow them to come out
(c)Allow the Coolant to flow to the cutting edge
(d)All of these

18.Which of the following material is heat sensitive
(a)PVC(b) LDPE(c) LLDPE

20.Torpedo is a part of the following machine
(a)Reciprocating screw injection moulding (b) Compression moulding(c) transfer moulding(d) Plunger type injection moulding
21.If cycle time for a part is 30 seconds in ainjection moulding machine how many parts will be produced using single cavity mould in 20 hours if the machine runs in automatic cycle — (a) 1200 (b) 2400 (c) 4800 (d) 360022.Which of the following material can be made into rigid and flexible products — (a) PVC(b) HDPE(c) Nylons(d) PC
23.What type of heating system is used for thermoset injection moulding — (a) Electrical resistance heaters (b) Oil circulating heating(c) Steam heating(d) Water heating
24.Floating plate is an essential part of the following type of mould —
(a)One plate: (b) Two plate(c) Three plate(d) Hot runner mould
25.Why thermosets materials can not be recycled(a) They need very high temperatre for recycling
(b)Because of the crosslinking when processed
(c)They need very high pressure for recycling
(d)They are very hard material
26.The reason for short shot in injection moulding is (a) Insufficient charging of material(b) Low injection pressure (c) Low injection speed(d) All of these
27.Which of the following is not a part of compression moulding machine — (a) Fixed platen (b) Movable platen (c) Screw & Barrel (d) Mould
28.Gel coat is a term associated with the following —
(a)Injection moulding(b) Compression moulding(c) Hand layup(d) Transfer moulding
29.The circuits in the 8085A microprocessor that provides arithmetic and logic functions are called as the -
(a)1/0(b) CPU(c) ALU(d) All of these
30.Routine maintenance of the machine like oiling greasing etc. Comes under the following type of mainænance-
(a)Break down (b) Preventive(c) Predictive(d) Corrective
31.What is the shape of the danger warning sign symbol used to indicate electrical supply — (a) Circular (b) Triangular (c) Square (d) Rectangular
Contd...3/13/A/C/S4/2iE-3-
32.What is the r.p.m. for a high speed steel drill Ø 24mm to cut mild steel if cutting speed for mild steel is 30m/min(a) 268(c) 489(d) 527
33.In a fully hydraulic clamping type injection moulding machine if the minimum mould thickness is 200mm and opening stroke is 600mm what is the maximum daylight (a) 200mm (b) 400mm (c) 800mm (d) 1000mm
34.The weight of each component and the runners are 14gm and 12gm respectively. The machine is producing 6 components per cycle with a cycle time of 24sec. How much should a hopper be filled so that the resin does not stay in the hopper for more than a hour? (a) 25.56kg (b) 16.78kg (c) 17.58kg (d) 14.40kg

35.Clamping tonnage required for a part in injection moulding depends on-(a) MFI of the material(b) Projected area of the part(c) Depth of the part(d) All of these
36.Main root cause of the burn mark is —(a) Material contamination(b) Excessive melt temperature(c) Inadequate air vent(d) None of these
37.Melt temperature of in injection moulding can be change by changing —

(a) Barrel temperature(b) Screw speed(c) Back pressure(d) All of these
38.The best example for a semi liquid lubricant is — (a) Graphite(b) Grease(c) Caster oil(d) Coconut oil
39.The time interval between the opening and closing of mould for escape of volatile gases in compression moulding is called —
(a) Curing time (b) Cooling time (c) Holding time (d) Breathing time Locking force in tons in injection moulding is given by (P is pressure in PSI & A is area in square inch) —(a) P x A/1000(b) P x A/2000(c) P x A/3000(d) P x A/400041.Bastard files has — (a) 20 teeth/inch(b) 30 teeth/inch(c) 40 teeth/inch(d) 50 teeth/inch42.In bench vice the plates are made of—(a) Cast iron(b) Mild steel(c) High carbon steel (d) Tool steel
43.I Poise is equal to —